Scope of application:
This applies to the construction of houses, airfields, roads, railways, railways and bridges, ore tunnels, as well as to the inspection of quality, installation of equipment, electricity, water and gas。
Rationale:
Water grinding drills are mainly drilled through the water grinding machine along the line of the pillar with a thousand holes, which are connected to the borehole, drilled and cored, and when all water grinding drill holes are linked to a ring, the core is separated from the wall, forming the surface of the core, and then a section of the remaining core core is divided and the core is taken along the radius to form the internal surface. A small hole is drilled on a piece of rock, then a wedge is drilled into the small hole, slamming the wedge and crushing the rock, causing the rock to be swung with pull and cutting on the surface of a lead hammer, and when the squeeze pressure is greater than the sum of the maximum anti-gravity and the extreme anti-criticity, the rock is pulled and cut to the bottom, breaking into small pieces, using a roller to pull out the hole and extracting the divided rock. The cycling process whereby cores are taken, cracks are broken, blocks are taken, in turn, and the purpose of the hole is ultimately achieved. This was followed by the installation of cages and concrete。
Construction methodology:
First of all, it's wired, set a central point for each of the stakes, hit the little stakes up to 200 millimeters and make sure they don't move. The order of construction is then selected, depending on the spacing of the pillars, whether they will jump or whether they will proceed in order。
At the time of the official construction work, the foundations were placed on the small stakes, ensuring that the drills were just above the small stakes, and then the temporary sluice ponds were constructed and, if necessary, clay was prepared。
The pits were then dug, drilled, mud pumps opened and recycled and drilled down。
Record the depth of the drill, the drill, at some point, and check the transfer of the mud to see if it reaches the design depth or the holding layer
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